LocalDateTime转为时间戳

要将LocalDateTime转换为时间戳，你可以使用以下方法：在Java程序中，可以使用toInstant()方法将LocalDateTime对象转换为Instant对象，然后使用toEpochMilli()方法将Instant对象转换为时间戳。具体代码如下所示：

LocalDateTime localDateTime = LocalDateTime.now();
long timestamp = localDateTime.toInstant(ZoneOffset.UTC).toEpochMilli();

这段代码将当前的LocalDateTime对象转换为UTC时区的时间戳。你可以根据需要修改时区参数。
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